package com.jacklin.controller;

import com.jacklin.config.ProjectUrlConfig;
import com.jacklin.enums.ResultEnum;
import com.jacklin.exception.MyException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.net.URLEncoder;


/**
 * @Author 林必昭
 * @Date 2019/4/12 22:25
 */

@Controller
@Slf4j
@RequestMapping("/wechat")
public class WechatController {

    @Autowired private WxMpService wxMpService;

    @Autowired private WxMpService wxOpenService;

    @Autowired private ProjectUrlConfig projectUrlConfig;

    /**
     * 微信授权(微信公众平台)
     * @param returnUrl
     * @return
     */
    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl){

        String url = projectUrlConfig.getWechatMpAuthorize() + "http://newstarsell.natapp1.cc/wechat/userInfo";//用户授权完成之后重定向到userInfo方法

        //String oauth2buildAuthorizationUrl(String redirectURI, String scope, String state)用户授权完成后的重定向链接
        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAUTH2_SCOPE_BASE, URLEncoder.encode(returnUrl));//OAUTH2_SCOPE_BASE,不弹出授权页面，直接跳转，只能获取用户openid
        log.info("【微信网页授权】获取code,redirectUrl={}",redirectUrl);
        return "redirect:" + redirectUrl;
    }

    @GetMapping("/userInfo")
    public String userInfo(@RequestParam("code") String code,@RequestParam("state") String returnUrl){
        //第一步获取code
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try{
             wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        }catch (WxErrorException e){
            log.error("【微信网页授权】，{}",e);
            throw new MyException(ResultEnum.WECHAT_MP_ERROR.getCode(),e.getError().getErrorMsg());
        }
        //第二步通过code获取openid
        String openId = wxMpOAuth2AccessToken.getOpenId();
        log.info("【微信网页授权】获取openid,returnUrl={}",returnUrl);
        return "redirect:"+returnUrl+"?openid="+openId;
    }

    /**
     * 微信登陆(微信开放平台)
     */
    @GetMapping("/qrAuthorize")
    public String qrAuthrize(@RequestParam("returnUrl") String returnUrl){

        String url= projectUrlConfig.getWechatOpenAuthorize() + "/newstarsell/wechat/qrUserInfo";
        String redirectUrl = wxOpenService.buildQrConnectUrl(url,WxConsts.QRCONNECT_SCOPE_SNSAPI_LOGIN,URLEncoder.encode(returnUrl));
        return "redirect:"+returnUrl;

    }

    @GetMapping("/qrUserInfo")
    public String qrUserInfo(@RequestParam("code") String code,@RequestParam("state") String returnUrl){

        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try{
            //根据code获取wxMpOAuth2AccessToken
            wxMpOAuth2AccessToken = wxOpenService.oauth2getAccessToken(code);
        }catch (WxErrorException e){
            log.error("【微信网页授权】{}",e);
            throw new MyException(ResultEnum.WECHAT_MP_ERROR.getCode(),e.getError().getErrorMsg());
        }
        log.info("wxMpOAuth2AccessToken={}",wxMpOAuth2AccessToken);
        String openId = wxMpOAuth2AccessToken.getOpenId();

        return "redirect:"+returnUrl+"?openId="+openId;
    }


}
